Micro SD Card SPI Module 3.3V for ESP32 and STM32
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Prices updated: 12 Oct 2026
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About this product
A microSD card module that connects to a microcontroller over SPI and operates at 3.3 V logic. It adds file storage for data logging and file handling in ESP32 and STM32 projects, supporting microSD cards up to 2 GB and microSDHC cards up to 32 GB.
Specifications
- Working voltage
- 3.3 V
- Interface
- SPI
- Compatible card
- MicroSD (TF)
- Supported capacity
- microSD up to 2 GB, microSDHC up to 32 GB
- Module size
- 20 x 28 mm
- Typical current
- 80 mA
Frequently asked questions
How do I wire the SD module to an ESP32 or STM32?
Connect VCC to 3.3 V and GND to ground, then connect the SPI lines (MOSI, MISO, SCK) and a chip-select pin from the module to the matching pins on your microcontroller. Use the pin mapping in your library.
Can I connect it to a 5 V Arduino board?
The module is rated for 3.3 V working voltage and 3.3 V interface levels. With a 5 V board, use a level shifter on the signal lines and power the module from 3.3 V.
